Telecommunication
Beginning of paper
1. Introduction
Computer and telephone networks inflict a gigantic impact on today's
society. From letting you call John in Calgary to letting you make a withdraw
at your friendly ATM machine they control the flow of information. But today's
complicated and expensive networks did not start out bi ....
Middle of paper
.... telegraph is basically an electromagnet connected to a battery
via a switch. When the switch is down the current flows from the battery
through the key, down the wire, and into the sounder at the other end of the
line. By itself the telegraph could express only two states, on or off. This
limitation was eliminated by the fact that it was the duration of the connection
that determined the dot and dash from each other being short and long
respectively. From these combinations of dots and dash ....
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Word count: 3597
Page count: 14 (approximately 250 words per page)
